And that is exactly what he does, punching and kicking a homeless man in the face, bloodying his nose, before wishing him a Merry Christmas.

That videotaped assault led to a three-year prison sentence Friday for the man shown carrying it out.

Taylor Giresi, 22, whose lawyer said he has an IQ of 74 and numerous psychological issues, told Superior Court Judge Anthony J. Mellaci Jr. that he did not intend to hurt David Ivins. Giresi also said he failed to see what the big deal was.

‘‘I already apologized to the homeless man; I knew him,’’ Giresi said in a halting monotone. ‘‘It wasn’t like anything serious. But when I put it on YouTube it got serious. I wasn’t trying to hurt the man.’’

Giresi pleaded guilty in January under the terms of a plea agreement to conspiring to use a juvenile to commit a crime.

Prosecutors and Giresi’s defense lawyer agreed Giresi was egged on and had his actions directed by a juvenile who filmed the attack and who was 17 at the time.